Dana White’s cell phone works as mixed martial arts’ version of a storm siren.

When it buzzes right before a post-fight press conference, there’s something major about to fly in the direction of everyone in White’s vicinity. In the case of Saturday night at Mandalay Bay after UFC 156, it was something that failed to show up on anyone’s radar.

After seeing the way Aldo passed the toughest test of his career to this point, according to White, Pettis would rather face the featherweight champion immediately. Like an afternoon shower that blows in on a day full of clear skies, Aldo was caught off guard by it all.

“That is an interesting fight,” Aldo said through a translator. “I train to fight the best. I respect them all. I think Pettis is almost there with the title shot at his own division but it would be an interesting fight.”

Looks like Aldo will stay in the featherweight division for the time being. Pettis may have helped answer that question without even knowing it.

Aldo said beating Edgar, the former lightweight champion, might serve as a suitable goodbye to the division he’s reigned over for four years before the fight. Aldo goes through draining weight-cuts to make the 145-pound limit and expressed serious interest in going up to the 155-pound class.

But the fact that he’s established himself as one of the most dominant champions in MMA — Aldo has now won 15 straight bouts and seven title fights — had Aldo re-thinking his position while still in the octagon after beating Edgar.

“I get sick, I get fed up, but all my teammates they help me out,” Aldo said. “At the end of the day, I can make the weight so I’m still here fighting at this weight class.”

The concern the UFC may have encountered with Aldo staying at featherweight is finding him opponents both deserving and recognizable enough. Although legitimate contenders like Ricardo Lamas and Chan Sung Jung are out there, Pettis is better known to fans from his time as the WEC lightweight champion.

Aldo vs. Pettis would likely get advertised as a fight between two of the UFC’s flashiest strikers. Last week in Chicago, Pettis set up the finishing sequence of his fight by running off of the fence to knee Cerrone in the face.

Aldo sprang off the fence late in the Edgar fight himself to fire a Superman punch. Powerful strikes like that were the reason Aldo got by Edgar in a fight that seemed closer than the judges’ scorecards indicated.

Aldo took the first two rounds with ease, but the champion lost speed and power in the later rounds — a recurring and possible side effect of his dramatic weight cuts. Edgar landed most of his strikes in the third, fourth and fifth rounds.

“The scoring was way off,” White said. “It should have been a lot closer than that, but it’s all how you judge the third round. But I do think Aldo won the fight.”

White wants similar challenges for Aldo going forward, and he thinks Pettis is the next opponent to bring that.

Demetrious "Mighty Mouse" Johnson slammed his hands down on his UFC flyweight championship belt. Somewhere else in Rogers Arena, Rory MacDonald surely looked on with envy. Johnson and MacDonald put on dominant performances in the UFC's first trip to Vancouver in three years. Johnson defended his title for the fourth time, not allowing Ali Bagautinov to win any of their five fast-paced rounds. That couldn't quite top MacDonald, who barely let Tyron Woodley touch him in an all-important welterweight co-main event. MacDonald hopes the performance leads him to an opportunity to claim space alongside Johnson in the UFC champion's club.